This online Flash interactive simulates the process of discovering new exoplanets using the transit method. Learners explore a simulated star field, record data, make measurements and do calculations to discover new planets. Instructional videos and...(View More) guides are included.(View Less)

This interactive program focuses on the role of sea level in climate change. Sections include an overview and a list of relevant NASA satellite missions and their objectives. A third section, entitled Global View, covers the following 5 topics:...(View More) Latest View, Large El Niño, Hurricane Katrina, Indian Ocean Tsunami, and La Niña.(View Less)

This is an activity about the way distance, albedo, and atmosphere affect the temperature of a planet. Learners will create a planet using a computer game and change features of the planet to increase or decrease the planet's temperature. They will...(View More) then discuss their results in terms of greenhouse strength and the presence of liquid water. This lesson is part of Project Spectra, a science and engineering education program focusing on how light is used to explore the Solar System.(View Less)

This is an activity about the atmospheric conditions (greenhouse strength, atmospheric thickness) Mars needs to maintain surface water. Learners will use a computer interactive to learn about Mars past and present before exploring the pressure and...(View More) greenhouse strength needed for Mars to have a watery surface as it had in the past. This lesson is part of Project Spectra, a science and engineering education program focusing on how light is used to explore the Solar System.(View Less)

This is an activity about the way distance, reflectivity, and atmosphere affect the temperature of a planet. Learners will create a planet using a computer game and change features of the planet to increase or decrease the planet's temperature. This...(View More) lesson is part of Project Spectra, a science and engineering education program focusing on how light is used to explore the Solar System.(View Less)

This is an activity about how much atmospheric pressure is needed on Mars to maintain surface water and why the planet does not have surface water today. Learners will use a computer interactive to learn about Mars past and present before exploring...(View More) the pressure and greenhouse strength needed for Mars to have a watery surface as it had in the past. This lesson is part of Project Spectra, a science and engineering education program focusing on how light is used to explore the Solar System.(View Less)

This interactive illustrates how images from space get to Earth and how we interpret the images. Users are encouraged to experiment with images to get a firm grasp of how scientists use color filters to interpret data. Click on the initial image at...(View More) the site to start the interactive.(View Less)

Learners will compare known elemental spectra with spectra of Titan and Saturn’s rings from a spectrometer aboard the NASA Cassini spacecraft. They identify the elements visible in the planetary and lunar spectra. The activity is part of Project...(View More) Spectra, a science and engineering program for middle-high school students, focusing on how light is used to explore the Solar System.(View Less)

This is an online sorting game that compares the lifetime risk of death from an asteroid impact to other threats. For example, are you more likely to be killed by an amusement park ride or an asteroid impact? It is part of the Killer Asteroids Web...(View More) Site. The site also features a background overview of the differences between asteroids and comets, information on different types of asteroids (rubble piles vs monoliths), a discussion of how at risk Earth really is to an asteroid or comet impact, and background information on light curves.(View Less)